Combustion of waste sludge with oxygen and carbon dioxide at a circulating fluidized bed

Ha Na Jang, Hang Seok Choi, Seung Ki Back, Jin Ho Sung, Jeong Hun Kim, Yong Chil Seo

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Cold bed and pilot bed tests using circulating fluidized bed (CFB) were conducted to apply oxy-fuel technology for waste sludge combustion as a carbon capture and storage technology. In preliminary, the hydrodynamics of circulating fluidized bed was observed in the cold-bed setup to simulate the 30KWth CFB oxy-fuel pilot test bed, in which the superficial velocity for fast fluidization was determined over than 2.5m/s. The minimum fluidization velocity (Umf) was estimated as 0.104 m/s. In the pilot test, air and oxy-fuel combustion experiments for waste sludge and biomass were conducted with a flue-gas recirculation unit. The oxygen injection rate for oxy-fuel combustion was optimized from 21% to 25%. In 15% of flue-gas recirculation rate, carbon dioxide concentration in flue-gas was achieved over 90% of purity, which verified the possibility of oxy-fuel technology as CCS ready technology in a CFB combustion system for burning waste sludge and biomass.

Original languageEnglish
Pages643-648
Number of pages6
Publication statusPublished - 2014 Jan 1
Event11th International Conference on Fluidized Bed Technology, CFB 2014 - Beijing, China
Duration: 2014 May 142014 May 17

Other

Other11th International Conference on Fluidized Bed Technology, CFB 2014
CountryChina
CityBeijing
Period14/5/1414/5/17

All Science Journal Classification (ASJC) codes

  • Process Chemistry and Technology

Fingerprint Dive into the research topics of 'Combustion of waste sludge with oxygen and carbon dioxide at a circulating fluidized bed'. Together they form a unique fingerprint.

  • Cite this

    Jang, H. N., Choi, H. S., Back, S. K., Sung, J. H., Kim, J. H., & Seo, Y. C. (2014). Combustion of waste sludge with oxygen and carbon dioxide at a circulating fluidized bed. 643-648. Paper presented at 11th International Conference on Fluidized Bed Technology, CFB 2014, Beijing, China.